Blade serverBlade servers can contain components such as microprocessors, memory, Ethernetcontrollers, and hard disk drives. They receive power, network connection, andI/O devices (such as DVD drive, keyboard, mouse, video port, USB ports, and aremote monitoring port) from the BladeCenter S chassis.A SAS expansion card must be installed in each blade server that will access theintegrated shared storage.Note: The control panel door is shown in the closed position in the followingillustration. To access the power-control button, you must open the control paneldoor.KVM select buttonActivity LEDLocation LEDInformation LEDBlade-error LEDMedia-tray selectbuttonPower-control buttonPower-on LEDYou can find the documentation for blade servers in the IBM Systems InformationCenter, which is at http://publib.boulder.ibm.com/infocenter/systems/index.jsp.To access the blade server documentation from this site, click Systems hardware >BladeCenter information > Blade servers.To determine which blade servers are compatible with the BladeCenter S chassis,see the IBM ServerProven Web site at http://www.ibm.com/servers/eserver/serverproven/compat/us/eserver.html.Controls and indicatorsBlade servers typically provide the following controls and indicators:KVM select buttonWhen using an operating system that supports a local console andkeyboard, press this button to associate the shared BladeCenter S chassiskeyboard and video ports with the blade server.Activity LEDWhen this green LED is lit, it indicates that there is activity on the harddisk drive or network.Location LEDWhen this blue LED is lit, it has been turned on by the systemadministrator to aid in visually locating the blade server. The location LED12 BladeCenter S Type 7779/8886: Installation and User's Guide